Clinical manifestations of advanced stage of squamous lung cancer include cough, hemoptysis, dyspnea, pain, emaciation and so on. Cough and hemoptysis are the most common symptoms of squamous lung cancer, which are mainly due to the stimulation of bronchial tubes by the lesion leading to cough, and the invasion of blood vessels by the lesion, which can lead to rupture of blood vessels and hemoptysis. Difficulty in breathing is due to the obstruction of bronchial tubes by the lesion, which leads to the dysfunction of ventilation, manifesting symptoms of chest tightness, shortness of breath and other symptoms of dyspnea. Intracranial metastasis, bone metastasis and metastasis to other parts of the body in advanced stage squamous lung cancer will lead to pain symptoms, and pain relieving drugs need to be given. The tumor load of advanced stage squamous lung cancer is larger, and the protein consumption of the tumor also increases significantly, so the patient will have obvious wasting symptoms first.